diff options
| author | Xianting Tian <tian.xianting@h3c.com> | 2020-08-13 19:28:03 +0800 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2020-09-21 21:06:02 -0400 |
| commit | b427e765bdffcc18911ace199a17b09332a47d55 (patch) | |
| tree | bb083c4d181aade37aabdb508d434915ed1ed91e /kernel/trace/trace.c | |
| parent | 5c8c206e4308ee33dea7c60b0cfcbed48a6438b4 (diff) | |
tracing: Use __this_cpu_read() in trace_buffered_event_enable()
The code is executed with preemption disabled, so it's
safe to use __this_cpu_read().
Link: https://lkml.kernel.org/r/20200813112803.12256-1-tian.xianting@h3c.com
Signed-off-by: Xianting Tian <tian.xianting@h3c.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace.c')
| -rw-r--r-- | kernel/trace/trace.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 8fac7d6db222..1c4ca25944ba 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -2511,7 +2511,7 @@ void trace_buffered_event_enable(void) preempt_disable(); if (cpu == smp_processor_id() && - this_cpu_read(trace_buffered_event) != + __this_cpu_read(trace_buffered_event) != per_cpu(trace_buffered_event, cpu)) WARN_ON_ONCE(1); preempt_enable(); |